/**
 * Copyright 2009-2019 the original author or authors.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.ibatis.plugin;

import java.util.Properties;

/**
 * 拦截器接口，用户可以进行扩展
 *
 * @author Clinton Begin
 */
public interface Interceptor {

    /**
     * 具体拦截操作
     *
     * @param invocation
     *
     * @return
     *
     * @throws Throwable
     */
    Object intercept(Invocation invocation) throws Throwable;

    /**
     * 用于创建Executor、ParameterHandler、ResultSetHandler、StatementHandler的代理对象
     *
     * @param target 就是Executor、ParameterHandler、ResultSetHandler、StatementHandler实例
     *
     * @return
     */
    default Object plugin(Object target) {
        return Plugin.wrap(target, this);
    }

    /**
     * 用来设置插件的属性值
     *
     * @param properties
     */
    default void setProperties(Properties properties) {
        // NOP
    }

}
